... : BlackManufacturing Technology: aluminum alloyBattery LED light tube continuous lighting time:60 hoursIrradiation distance: 800 metersBallast: AC 250-400HZBrightness: 1400 ... become to green.38/50W dual power output, long time following the flight,38W/100 minutes, 50W/70 minutes ... tail light is blue, into 38W work, by three time, switch off the power.Ballast output efficiency of 87%, low ...